Trenton, New Jersey (CNN) - Another top ally of New Jersey Gov. Chris Christie has resigned amid a political scandal that has roiled the Republican's administration and clouded his potential presidential prospects.

Christie announced at a news conference Friday that David Samson, who chairs the Port Authority of New York and New Jersey, stepped down earlier in the day, effective immediately.

CNN's GUT CHECK | for March 28, 2014 | 5 p.m.
– n. a pause to assess the state, progress or condition of the political news cycle

BREAKING …Russian President Vladimir Putin called President Barack Obama on Friday to discuss the situation in Ukraine, the White House announced. Obama talked about having the two countries' top diplomats continue to engage in talks and urged Putin to "avoid further provocations, including the buildup of forces on its border with Ukraine."

Riyadh, Saudi Arabia (CNN) - The United States and Saudi Arabia are "very much aligned" despite recent policy differences over Iran and Syria, a senior U.S. official said following a meeting between President Barack Obama and King Abdullah.

Sitting down face to face with the King at his desert retreat, Rawdat Khuraim, outside the capital, Obama reiterated the United States is determined to prevent Iran from acquiring a nuclear weapon.

Washington (CNN) – A pair of lines praising Martin Luther King, Jr. were scrubbed from an early version of President Bill Clinton's 1998 State of the Union address, apparently after someone in the White House raised questions about how the rhetorical flourishes would play with white people.

A rough draft of the 1998 speech was included in a new batch of previously withheld documents released by the National Archives and the Clinton Presidential Library on Friday. It included a passage about racial healing, tentatively titled "One America In The 21st Century."

Trenton, New Jersey (CNN) – Chris Christie did something Friday that he had not done in more than two months – hold a news conference.

The Republican governor of New Jersey's appearance in front of reporters at the statehouse in Trenton was his first since January 9, when he answered questions for nearly two hours about the George Washington Bridge controversy, which was starting to make national headlines.

Here are the latest developments from one hour and three minute long news conference:

Washington (CNN) - Vice President Joe Biden is doing something this weekend that he hasn't done since 2011 - giving the White House Weekly Address.

The Vice President will use the weekly address that's heard on radio and the internet to stress the importance of raising the federal minimum wage, which has been a major goal for the administration over the past few months.

(CNN) – Former Florida Governor Jeb Bush spoke about foreign policy and the economic importance of immigration reform to a group of some of the most prominent Republican fund-raisers Thursday evening in Las Vegas, several attendees told CNN. Bush addressed a private, VIP dinner of major supporters of the Republican Jewish Coalition kicking off the group's spring meeting.

"He was passionate on the economic importance of immigration reform," an attendee told CNN. Bush has repeatedly pushed for action on immigration in the last couple of years.

(CNN) - A third batch of confidential memos, notes and other papers from the Clinton White House released Friday sheds some light on how the Clinton administration handled the messaging around major events like the 1995 government shutdown and the Monica Lewinsky scandal.

Collectively, the documents released by the William J. Clinton Presidential Library, which had previously been sealed, open a window into the Clinton years and cover a variety of topics, including the office of former first lady Hillary Clinton, who's now considered the overwhelming favorite for the Democratic presidential nomination in 2016, if she decides to run.